Test Guide | Health New Zealand | Te Whatu Ora Waikato Laboratory Website

Laboratory Information

Test Name

IGF-1

External Price (excl. GST)

21.61

Specimen Collection

Adult Specimen

SST (gold), Heparin (light green)

Paediatric Specimen

0.5 ml Heparin (light green) or Plain(red).

Test Information

Department

Biochemistry

Test Availability

Monthly

Laboratory Turnaround Time

28 days

Method

i-sys

Unit of measurement

nmol/L

Reference interval

Reference intervals were updated on 28 April 2026 to Bidlingmaier et al., J Clin Endocrinol Metab 99 (5): 1712-1721, 2014.

Currently SD scores are only available by contacting the Waikato Hospital Laboratory

Reference interval Attachments

IGF 1 ref intervals update (IGF-1-ref-intervals-update.pdf, 380 KB)

Uncertainty of measurement

15%

Additional Information

True Growth Hormone deficient children rarely have IGF-1 levels > 8 nmol/L.

Minimum Volume

0.3 mL heparin plasma or serum.

Electronic Information

Registration Code

IGF1

HL7 mapping code

$IGF1

Laboratory Test Reference Guide